AAVSO: American Association of Variable Star Observers

Variable Star Plotter

Field photometry for ER UMa from the AAVSO Variable Star Database

Data includes all comparison stars within 0.154166666667° of RA: 09:47:11.89 [146.79954°] & Dec: 51:54:08.7 [51.90242°]

Report this sequence as X25151JX in the chart field of your observation report.

AUID RA Dec Label V B-V Comments
000-BBQ-806 09:47:56.49 [146.98538208°] 51:59:26.7 [51.99074936°] 106 10.595 (0.049)29 0.634 (0.086)
000-BKM-645 09:48:06.85 [147.02854919°] 51:45:44.6 [51.76239014°] 122 12.188 (0.057)29 0.515 (0.101)
000-BBQ-786 09:47:07.83 [146.78262329°] 51:45:40.6 [51.76127625°] 131 13.128 (0.027)29 0.640 (0.051)
000-BBQ-764 09:46:30.27 [146.62612915°] 51:47:28.1 [51.7911377°] 136 13.572 (0.025)29 0.635 (0.048)
000-BKM-647 09:47:01.14 [146.75474548°] 52:01:31.9 [52.02552795°] 140 14.046 (0.014)29 0.689 (0.025)
000-BBQ-794 09:47:22.18 [146.84242249°] 51:52:32.3 [51.87564087°] 142 14.203 (0.002)10 0.630 (0.004)
000-BKM-648 09:46:52.38 [146.71824646°] 51:53:02.4 [51.88399887°] 146 14.599 (0.014)10 0.657 (0.023)
000-BKM-649 09:47:42.83 [146.92845154°] 51:53:41.0 [51.89472198°] 152 15.177 (0.021)29 0.731 (0.045)
000-BKM-650 09:46:40.00 [146.66667175°] 51:50:45.5 [51.84597397°] 156 15.610 (0.060)29 0.673 (0.127)
000-BKM-651 09:47:05.02 [146.7709198°] 51:57:19.7 [51.95547104°] 160 16.032 (0.008)10 0.541 (0.011)
000-BKM-652 09:47:10.23 [146.7926178°] 51:50:58.1 [51.84947205°] 162 16.189 (0.034)29 0.811 (0.104)
  • AUID is the AAVSO Unique Identifier for the star. When reporting a problem, please include this AUID.
  • Coordinates are in J2000 sexagesimal format, followed by decimal degrees
  • Search for variable stars in this field via VSX
  • Label is that star's label when plotted on an AAVSO chart, usually (but not always) its V magnitude rounded to the nearest tenth.

Source Reference Table

Footnote Source Footnote Source Footnote Source
1 Tycho-2 17 ASAS 33 SRO50
2 GSC 1.2 18 SRO 34 K35
3 GSC 2.2 19 NA 35 Landolt2007
4 USNO A2.0 20 GCPD 36 Landolt2009
5 USNO B1.0 21 SDSS 37 BSM_S
6 GCVS 4.2 22 BSC 38 UCAC3
7 UCAC2 23 LONEOS 39 UCAC4
8 2MASS 24 WBVR 40 BSM-Hamren
9 AAVSO Charts 25 DENIS 41 BSM_Berry
10 CCD Henden 26 CMC14 42 TMO61
11 Downes 27 RRLyr 43 VSX
12 Hipparcos 28 BSM_NM 44 COKER30
13 HD 29 APASS 45 BSM_HQ
14 NSV 30 W28 46 Pan-STARRS
15 ACP 0.9 31 W30 47 Landolt2013
16 TASS 32 OC61 48 GAIA DR2